Self-travelling diamond-shaped pin-connected truss-type form traveler structure and form traveler travelling and constructing method

Abstract

Disclosed are a self-travelling diamond-shaped pin-connected truss-type form traveler structure and a form traveler travelling and constructing method. A form traveler is mainly composed of a main truss system, a horizontal connection system, an internal formwork system, an external formwork system, a bottom formwork platform system, a hanging system, an anchoring system and a travelling system. The main truss system is composed of two main trusses and horizontal bracings, and each single main truss is composed of a lower chord, an upper chord, a diagonal rod and a vertical rod which are connected into a whole via single-hole bolt pins through joint boxes. The two main trusses are connected by the spacing-adjustable horizontal bracings. A rear anchoring system is connected to the rear of the lower chords of the main trusses. The travelling system comprises a section rail located under the main trusses, a left-handed wheel, rollers, a travelling pushing jack and the like. The self-travelling diamond-shaped pin-connected truss-type form traveler structure is quick to install, the spacing between the main trusses and the positions of hanging rods can be adjusted according to the section forms of different box girders on the basis that load bearing is satisfied, the optimal stress state is formed, universality is high, turnover rate of the form traveler is increased greatly, project cost is saved, and economical benefit is obvious.

Description

technical field [0001] The invention relates to a self-propelled diamond-shaped pin-knot truss-type hanging basket structure with adjustable main truss spacing, side formwork riding and hanging combined support, which belongs to the temporary construction device of the upper structure of a large-span prestressed concrete bridge. Background technique [0002] The hanging basket is an important equipment for the beam body construction of long-span railway and highway prestressed concrete bridges using the cantilever pouring method. When the hanging basket is used to build a long-span prestressed concrete bridge, it cantilever directly from the top of the pier and extend to the span direction section by section. This construction method is not affected by environmental factors under the bridge such as the height of the pier and the depth of the river, and can complete the construction of the bridge without interrupting traffic and shipping. This pouring construction process no...

AI Technical Summary

Problems solved by technology

At present, although there are many types of diamond-shaped hanging baskets in China, there are shortcomings such as unstandardized components, poor adaptability and versatility, and poor turnover performance.

The construction hanging basket system used on one bridge had to be rebuilt on another bridge, which not only caused a lot of waste of materials and funds, but also wasted a lot of time and manpower, and delayed the construction period

The main reasons for this problem are: first, the design of the hanging basket is highly targeted, and it is tailor-made for a specific project.

Structural design parameters such as the main truss spacing and section size of the hanging basket; the height and shape of the formwork; the position of the suspenders and other structural design parameters do not consider standardization and versatility, and the ability to be replaced and adjusted is poor.

The second is that the hanging basket system itself bears complex forces. To design a new type of hanging basket requires a lot of professional knowledge. The construction unit does not have a good summary of the construction method, and the design ability of the construction unit’s temporary facilities is still relatively weak.

[0004] The problems of diamond-shaped hanging baskets have seriously hindered the development of enterprises, especially some large state-owned enterprises.

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